/Engine/Plugins/2D/Paper2D/Source/Paper2D/Public/MaterialExpressionSpriteTextureSampler.h
This is a texture sampler 2D with a special automatically defined parameter name. The texture specified here will be replaced by the SourceTexture or an AdditionalSourceTextures entry of a Paper2D sprite if this material is used on a sprite.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)( HideCategories=(MaterialExpressionTextureSampleParameter, MaterialExpressionSpriteTextureSampler)) class PAPER2UMaterialExpressionSpriteTextureSampler : public [UMaterialExpressionTextureSampleParameter2D](API\Runtime\Engine\Materials\UMaterialExpressionTextureSample-_1)
int32
AdditionalSlotIndex
This is the slot index into the AdditionalSourceTextures array.
bool
bSampleAdditionalTextures
Is this a sampler for the default SourceTexture or the AdditionalSourceTextures list?
FText
SlotDisplayName
Friendly label for the texture slot, displayed in the Sprite Editor if not empty.